Tiller for a boat



FIG. 1 is a top plan view of a tiller for a boat showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side elevational view thereof, the right side being a mirror image;

FIG. 4 is a first perspective view thereof; and,

FIG. 5 is a second perspective view thereof. 

The ornamental design for a tiller for a boat, as shown and described. 